Water-pressure injector.



J. H. VENNERS. WATER PRESSURE INJECTOR.

APPLICATION FILED MAY 17. 1905.

Silva "witneoaea I itmasfi. Znnera Quota,

1s Pzfns co., WASHJAIOYON: u.

BATENTED AUG. 7, 1906.

. invention comprises JAMES HENRY VENNERS,

PATENT orrion.

OF BROOKLYN, NEW YORK.

WATER-PRESSURE \NJECTOR.

Specification of Letters'Patent.

Patented Aug. '7, 1906.

Application filed May 17,1905. Serial No. 260,844.

To all whom it may concern:

Be it known that NERS, a citizen of the United States of America,residing at Brooklyn, in the county of Kings and State of New York, haveinvented new and useful Improvements in Water- Pressure Injectors, ofwhich the following is a specification.

This invention relates to Water-pressure injectors of the type disclosedin Letters Patent No. 761,021, granted to me May 24, 1904, and has forits objects to producera comparatively simple inexpensive device of thischaracter in which the chemical will be discharged from its receptacleunder the influence of compressed air, one wherein the air will becompressed by water taken from the main to which the device isconnected, and one where in the air will form a cushion between andserve to prevent the water coming into contact with the chemical untilthe latter is discharged into the main.

With these and other objects in view the the novel features ofconstruction and combination of parts more fully hereinafter described.

In the accompanying drawing the figure is a side elevation of anapparatus embodying the invention.

Referring to the drawing, 1 designates a watermain throu h which waterpasses under pressure to a exible pipe or hose 2, provided with aninjector-nozzle 3, there being provided in the pipe 1 at a pointsuitably remote from the hose a controlling-valve 4:. The hose 2 isconnected with the main 1 by a coupling member or key 5, to which isconnected a chemical-feed pipe or duct 6, leading from the lower end ofa vessel or receptacle 7 and having {a branch portion or section 8communicating with a tank or reservoir 9 to carry the supply ofchemicals, there being provided in the branch duct 8 a cut-off valve 10and a back-pressure check-valve 11, while the main duct 6 has adjacentits point of connection with the coupling member 5 a cut-off valve 12. j

The vessel or receptacle 7, which is preferably composed of glass andhoused in a protecting-frame '13, is connected at its upper end, bymeans of a pipe or duct 14:, with the upper end of a compressed-air tankor cylinder 15, in turn connected at its lower end, by means of a pipe16 and coupling member or T 17, with the water-main 1, there beingarranged in the pipe 16 a cut-off valve 18 and I, JAMES HENRY VEN- 1 19.

a ball or float check-valve Connected with and opening from the pipe 16to the external atmosphere is an aircock 20, having a suitable valve 21.

In practice, supposing the reservoir 9 to contain a suitable supply ofchemical and the cut-off valves 1, '12, and 18 to be closed, the valve21 is opened to permit the tank 15 to fill with air through the air-cock20 and the valve 10 is opened to permit the vessel 7 to fill withchemical, it being understood that as within the vessel 7 the chemicalrises in the vessel the float-valve will be carried upward to close thepipe 14,

leading from the upper end of said vessel, when the latter is properlyfilled. After the vessel and tank are filled with chemical and air,respectively, the valves 10 and 21 are closed and the valves 4: and 18opened, thereby allowing water under pressure from the main 1 to passthrough pipe 16 into the tank 15 and to compress the air in the latter,the valve 18 being closed after a suitable airpressure has beenobtained. The valve 12 is next opened sufiiciently to permit the desiredamount of chemical to flow from vessel 7 into and commingle with thewater flowing from the main 1 through the hose 2 to nozzle 3, it beingapparent that owing to the pressure in the tank 15 being maintained bywater taken from the main duct 1 and acting upon the chemical-supplythrough the medium of the air in tank 15 the pressure between thechemical fed from pipe 6 and that of the water in the main 1 will beequalized to insure a proper mixing or commingling of the water andchemical, while back pressure of the chemical to tank 9 is obviated bythe check-valve 11.

It is apparent from the foregoing that I roduce a simple deviceadmirably adapted for the attainment of the ends in view and one whereinthe air contained in tank 15 will form a column disposed between andserving to separate the water entering said tank from the chemicalforced under ressure from vessel 7, thereby obviating liability of thewater mixin with the chemical except upon disb charge of the latter frompipe 6 into the main 1. In attaining these ends it is to be understoodthat minor changes in the details herein set forth may be resorted towithout departing from the spirit of the invention.

Having thus described my invention, what I I claim isj 1. In a device ofthe class described, a water-main, an air-tank having communication withthe water-main, a receptacle having 3. In a device of the classdescribed, a Wa communication with the air-tank and waterter-main, anair-tank having communication main, and areservoir having communicationwith the water-main, a receptacle having with the receptacle at a pointbetween the communication with the water-main and air- 5 receptacle andthe water-main. tank, a reservoir having communication with 20 In adevice of the class described, a wathe receptacle at a point between therecepter-main, an a' -tank having communication tacle and thewater-main, and a check-valve With the Water-main, a receptacle havinginterposed between the reservoir and recepcommunication with theair-tank and watertacle.

IO main, a valve positioned within the recepta- In testimony whereof Iaffix my signature 25 cle, a reservoir having commumcatlon with inpresence of two Witnesses.

tacle and the water-main, and a check-valve Witnesses: interposedbetween the receptacle and reser- THOMAS R. VENNERS. 15 voir.CHAS.'FRIEDENBERG.

the receptacle at a point between the recep- I JAMES HENRY VENNERS.

